Means for opening and closing windows



J y 28, 1931- wja. LAKE MEANS FOR OPENING AND CLOSING WINDOWS Filed March 24,' 1951 Patented July 28, 1931 UNITED STATES WILLIAM BEARD LAKE, or;naaInrrnu13-,ZENLNP.

g MEANS FOR OPENING sign o npsr qe wrnnows Application filed March 24, 1931, Serial No. 524,948, and in Great Britain .Febr narly fll, 1930.

This invention relates to means for opening and closing windows.

The object of the present invention is to provide improved means for opening and closing sliding windows by means of reduction gearing.

In mechanism constructed according to the present invention the. sash lines are actuated by pulley tackle which is itself actuated by in reduction gearing, preferably of the irreversible type, such as a threaded rod and nut. The employment of pulley tackle enables the movement of the windows to be multiplied to any desired extent for a given movement of the tackle, and thereby enables economy to be effected as regards the head room required for housing the tackle, and the irreversible reduction gearing automatically holds the window in any desired position.

Preferably all the pulleys of thetackle, and consequently the sash lines, lie in the same plane.

In the accompanying drawings which illustrate the invention, Figure 1 is a front elevation and Figure 2 a section at right angles to Figure 1.

1 is a sash frame, and 2, 3 top and bottom windows respectively. 4 and 5 are chains which are connected to'the top of the window Qand pass over pulleys 6, 7 and 8, carried by the sash frame, and around apulley 9, the ends of the chains being either joined or connected to the pulley 9.

A Y-piece or yoke 10, in which the pulley 9 is mounted, is connectd to a chain 11 which passes around a pulley 12, then around a pulley 13, around a third pulley 14, the end of the chain being secured to a Y-piece or yoke 15 carried by the spindle on which the pulley 13 is mounted.

The spindles of the pulleys 12 and 14 are mounted in a pair of plates 16, 17 which together form a sliding member.

18 is a guide plate which is secured at its lower end to the sash frame 1.

Secured to the plates 16, 17 is a bracket 19 carrying rollers 20 which bear against the guide plate 18. Secured to the bottom of the plates 16, 17, is a block 21 having a screw-threaded hole engaged by a threaded red; .2 whi i ota e ym unted, n bracket 23 fixed to the sash frame 1. .The blew 2 and th eed od 2.2 form an ir rersible ne uctionge T e qwe n f he red 2 s prericled with a beve g a 24 in. mesh wi h aseleond bev l gea 2- ro atab y mounte in the sash f ame, 1,

' .26: fs i h n leby m ansefwhieh the berel gear2 c b tuated. Y 1

i ep ra ion, if "1 be des r d to. lower the ari dew, the han le 26 i turned by the operalien r tating the rod ZIthrQu-ghthe gearing 251, 25; this in turn allows'fthe. slid? ing member carrying the pulleys 12, 14, to ties, S t at. they approachthepulley .13 and pay 9.1 the. chain 11 which intulrn: allowsthe pulley 9,1;0 rise and the window to descend. When the, operator ceases to turn the handle 2.6 h reversible gear, automaticallyholds 3 9 the window in; position. What I claim is 1 1. In mechanism for opening and. closing windows, pulley-tackle, sash lines passing yer the pulleys Of-the tackle and adapted :for {is operative mounting with respect tothe fwi n; dew and reduction gearing. through which the pulley tackle is operated. f

2, In, mechanismfoiyopening and .clpsing windows. Pulley tackle the pulleysof which a e, he in the seine plane, sasntlinespassing over thep ull'eys 0f the tackle and adapted for operatire mountingwith respect tathe window, and reduction "gearing through whichv the pulley tackle is operated.

mechanism for opening. and closing WilldQWS, p lley-tackle, sash lines passing 9319. theipulleys ofthe tackle and adapted for operative mounting with respect to the win 19W and irre ersible reduction I gearing K139 1931 W Qh the pu ley; ta kle is. operated.

4. In mechanism for opening and closing ndows; pu ley tac le the pulley of Which lie in the same plane, sash lines passing over the pulleys of the tackle and adapted for operative mounting with respect to the window, and irreversible reduction gearing through which the pulley tackle is operated.

5. In mechanism for opening and closing windows, pulley tackle, sash lines passing over the pulleys of the tackle and adapted for operative mounting with respect to the window, a sliding member for actuating the pulley tackle, and screw and nut mechanism for reciprocating the sliding member.

6. In mechanism for opening and closing windows, pulley tackle, sash lines passing over the pulleys of the tackle and adapted for operative mounting with respect to the window, a sliding member for actuating the pulley tackle, screw and nut mechanism for reciprocating the sliding member, an operating handle whose axis of rotation is at right angles to that of the screw and nut mechanism, and gearing for transmitting drive from the handle to the screw and nut mechanism.

7. In mechanism for opening and closing windows, a flexible element adapted for attachment of its ends in spaced relation to a window, a second flexible element, said second flexible element being anchored at one end to the first flexible element and jointly therewith adapted to suspend a window, a slidable body having guide means over which said second flexible element passes so that the window may be raised and lowered according to the direction of movement of the body, and reduction gearing operable to slide said body.

8. In mechanism for opening and closing Windows, a flexible element anchored at one end and adapted to suspend a window, a slidable body having guide means over which said element passes so that the window may be raised and lowered according to the direction of movement of the body, and screw and nut gearing operable to slide said body.

9. In mechanism for opening and closing windows, a flexible element adapted to suspend a window, a bracket, a guide plate extending from the bracket and to which one end of said element is anchored, a slidable body, guide means for the flexible element located on said body below the point of anchorage of the flexible element thereto, guide means on the body coacting with said guide plate, and reduction gearing partly ournaled {)ndsaid bracket and operable to slide said 10. In mechanism for opening and closing windows, according to claim 9, wherein said reduction gearing is of the screw and nut type.

In testimony that I claim the foregoing as my invention I have signed my name this 12th day of March, 1931.

WILLIAM BEARD LAKE. 

